In our startup we do all our website and web app mock up in inkscape. Even artwork for our physical banner and posters we do using inkscape, krita [1] and then use scribus [2] to generate print quality pdf's.

We are overall very pleased with it.

We were eagerly waiting for 1.0 to have a HiDPI support and native Mac application. They both are there besides a lot of other features.

Kudos to team to keep it alive and continuously improve it. Even though Adobe XD,sketch and figma are preferred tools for UI and UX design, we build our assets using inkscape. We got this inspiration from Taiga [3] project which has an open source design repository in svg and a completed single page app using angularjs based on those designs. It gave our team confidence we can do it.

The added advantage is the artwork developed using inkscape can directly be used as svg images in website and single page app and are responsive by default.

Once again thanks to inkscape team to keep it alive and improve continuously.

[1] https://krita.org/en/

[2] https://www.scribus.net/

[3] https://github.com/taigaio/taiga-design